General Science Abstracts is a multidisciplinary index that includes all science fields. It has full text of articles from nearly 100 periodicals, dating as far back as 1995, graphs, charts, diagrams, photos, and illustrations and abstracting and indexing as far back as 1984 for many peer-reviewed journals.

The Medline database contains bibliographic citations and author abstracts for articles from approximately 3,900 current biomedical journals covering the fields of medicine, nursing, dentistry, veterinary medicine, the health care system, and the preclinical sciences. The database contains over 19 million references to journal articles in life sciences with a concentration on biomedicine.

PubMed comprises over 22 million citations for biomedical literature from MEDLINE, life science journals, and online books. PubMed citations and abstracts include the fields of biomedicine and health, covering portions of the life sciences, behavioral sciences, chemical sciences, and bioengineering.

Science Citation Index Expanded is a multidisciplinary index to the journal literature of the sciences which is now available via the Web of Science platform. It fully indexes over 6,650 major journals across 150 scientific disciplines and includes all cited references captured from indexed articles.

Journal articles and book chapters published by Elsevier from more than 2,500 peer-reviewed journals and more than 11,000 books. Covers physical sciences, engineering, life sciences, health sciences, social sciences and humanities.

Comprehensive coverage of zoology, including the biochemistry, behavior, ecology, evolution, taxonomy, and genetics of animals. Over 4,500 international serials plus approximately 1,500 non-serial publications are indexed and abstracted, including professional journals, magazines, newsletters, monographs, books, reviews, and conference proceedings. Now accessed via the Web of Science platform.